Unit 2 Muscles Flashcards
locate and describe the functions the muscles in the arm
1.biceps brachii
2. tricep brachii
1.biceps brachii:
location: anterior side of the body
function: flex the elbow
2. tricep brachii:
location: posterior side
function: extend the arm
locate and describe the functions the muscles in the rotateor cuff
- supraspinatus
- subscapularis
- infraspinatus
- teres minor
Major function: stabilizes shoulder joint
- supraspinatus
location: top of scapula kinda anterior
function:abduction of the arm - subscapularis
Function: internal rotation - infraspinatus
Located: basically on the scapula
Function: rotation and extension of the shoulder - teres minor
Location: side of scapula
Function: laterally or externally rotates the arm
locate and describe the functions the muscles in the back
- Trapezius
- Rhomboid Major
- Latissimus dorsi
- Trapezius
Location: across spine in the shape of a trapezoid
Function: stabilizing, elevating, depressing, and retracting the scapula - Rhomboid Major
Location: Next to spine
Function: downward rotation of scapula, adduction, or retraction of the scapula - Latissimus dorsi
Location: entire lower back
Function :adductor, extensor, and internal rotator of the arm.
locate and describe the functions the muscles in the anteror torso
- Pectoral Major
- serratus anterior
- rectus abdominis
- External oblique
- Pectoral Major
Function: internal rotation, adduction, and flexion of the arm - serratus anterior
Location: Ribs close to scapula
Funcation: move and lift scapula - rectus abdominis
Location: abbs
Function: flex trunk - External oblique
Location: side of abbs
Function: twisting the trunk
locate and describe the functions the muscles in the Quadriceps
- rectus femoris
- vastus lateralis
- vastus medialis
- vastus intermedius
Location: Anterior upper thigh
- rectus femoris
Function: flexes the thigh and extends at the knee joint. - vastus lateralis
Function: extending the knee - vastus medialis
Function: flex the knee - vastus intermedius
Function: flex the knee
locate and describe the functions the muscles in the Hamstrings
- Bicep femorus
- Semimembranosus
3.Semitendinosus.
Location: Posterior upper thigh
1. Bicep femorus
- Semimembranosus
Function: flex knee, rotate knee inward, and extends hip - Semitendinosus
locate and describe the functions the muscles in the lower leg
- tibus Anterior
- soleus
- gastrocnemius
- tibus Anterior
Function: dorsi flextion - soleus
Function: planter flextion - gastrocnemius
Function: planter flextion
locate and describe the functions the misalianous muscles
- sternocleidomastoid
2.sertuis
3.Deltiod
- sternocleidomastoid
Function: Neck extension and flexion, tits head back
2.sertuis
Function: hip flexion and outward
3.Deltiod
Function move arm
What is the Origins and insertions of the Deltoid?
Origin:
1.lateral part of the clavicle
2.the spine
3. acromion process of the scapula
Insertion: tuberosity of the **humerus
What is the Origins and insertions of the Biceps Brachii?
Origin: Scapula
Insertion: Radius
What is the Origins and insertions of the Rectus Abdominis?
Origin: Pubic crest (on the ilium)
Insertion:
1. Xiphoid process
2. ribs
Not needed What is the Origins and insertions of the Sartorius?
Origin: iliac spine(ilium)
Insertion: tibia
Not needed What is the Origins and insertions of the Latissimus Dorsi?
Origin:
1. spine
2. scapula
Insertion: Humerus
Not needed What is the Origins and insertions of the Tibialis Anterior?
Origin: Tibia
Insertion: Metatarsal
Not needed What is the Origins and insertions of the Triceps Brachii?
Origin:
1. Scapula
2. Humerus
Insertion: Ulna
Not needed What is the Origins and insertions of the Gastrocnemius?
Origins:
1. Tibia
2. fibia
Insertion: Achilles tendon
ligaments vs tendons
Ligaments: bone on bone action
tendons: muscle on bone action
Sliding filament theory
- neural impulses is sent
- trigger releases calcium
- calcium removes proteins
- Myosin forms a cross bridge
- Myosin pulls (Power stroke)
- ATP repeat
- My son continues power strokes
- muscle is fully contracted
- calcium is removed
- we all good
Types of joints
(1-6)
- ball-and socket
-most articulate (shoulder, and hips) - sliding
-least articulate (in foot) - Hinge
-(elbows and knees) - piviot
-(neck) - Saddle
(thumb) - Ellpois
(wrist)
Characteristics of Synovial Joints
- Tendons
-muscle to bone - Ligaments
-bone to bone - cartilage
-decuses friction - synovial membrane
-makes lube - joint capsule
-protect - joint cavity
-filled with lube - nerves
-send + recive messages from the brain - blood vessels
-bring nuetrans
